setAllowRequestOverride

public void setAllowRequestOverride(boolean allowRequestOverride)

Set whether HttpServletRequest attributes are allowed to override (hide)
controller generated model attributes of the same name. Default is "false",
which causes an exception to be thrown if request attributes of the same
name as model attributes are found.

setAllowSessionOverride

public void setAllowSessionOverride(boolean allowSessionOverride)

Set whether HttpSession attributes are allowed to override (hide)
controller generated model attributes of the same name. Default is "false",
which causes an exception to be thrown if session attributes of the same
name as model attributes are found.